Arvo Pärt (; born 11 September 1935) is an Estonian composer of classical and sacred music. Since the late 1970s, Pärt has worked in a minimalist style that employs his self-invented compositional technique, tintinnabuli. His music is in part inspired by Gregorian chant. As of 2013, Pärt has been the most performed contemporary composer in the world for three years in a row.